Reported Resistance Case(s)

Species: rhipicephalus microplus

Order	Family	Common Name(s)	Group	Host
acari	ixodidae	southern/tropical cattle tick	MED	cattle

Active Ingredient: sodium arsenite

MOA: Unknown Mode of Action (general), Undetermined MOA
Group: INORG	CAS #: 7784-46-5	Shaugnessy Code: 13603

Resistance Case(s)

Case Id	Year of Report	Type of Resistance	Location	Reference
G4809	1986	Field Evolved Resistance	Uruguay	WHO 1986. (1986).
G4810	1986	Field Evolved Resistance	Venezuela	WHO 1986. (1986).
G4254	1984	Field Evolved Resistance	France	Brun, L. O., Wilson, J. T. and Nolan, J. (1984). Patterns of resistance in five samples of ethion-resistant cattle tick Boophilus microplus from New Caledonia.. Trop. Pest Management., 30 296-01.
G3303	1976	Field Evolved Resistance	South Africa	Wharton, R. H. (1976). Tick-borne livestock diseases and their vectors: Part 5.. Acaricide resistance and alternative methods of tick control. World Anim. Rev., 20 8-15.
G68	1954	Field Evolved Resistance	Colombia	Legg, J. and Shanahan, G. J. (1954). The appearance of an arsenci resistant cattle tick (Boophilus microplus) in a small area of New South Wales.. Aust. Vet. J., 30 95-99.
G69	1954	Field Evolved Resistance	Jamaica	Legg, J. and Shanahan, G. J. (1954). The appearance of an arsenci resistant cattle tick (Boophilus microplus) in a small area of New South Wales.. Aust. Vet. J., 30 95-99.
G70	1954	Field Evolved Resistance	Australia-- New South Wales	Legg, J. and Shanahan, G. J. (1954). The appearance of an arsenci resistant cattle tick (Boophilus microplus) in a small area of New South Wales.. Aust. Vet. J., 30 95-99.
G24	1948	Field Evolved Resistance	Argentina	Finch, F. H. (1948). Arsenic-resistant cattle ticks and their reaction to gammexane.. Pastoral Rev. (Melbourne), 58 537-38.
G25	1948	Field Evolved Resistance	Brazil	Ault, C. N. (1948). Investigaciones sobre las dificultades de combatir la garrapata Boophilus microplus.. Rev. Med. Vet. (B. Aires), 30 174-211.
G21	1947	Field Evolved Resistance	Australia-- Queensland	Hitchcock, L. F. and Mackerras, I. M. (1947). The use of DDT in dips to control cattle tick.. J. Commw. Sci. Ind. Res. Org. Aust., 20 43-55.

*The population was created solely by selection and/or genetic manipulation.
**The population was selected further in the laboratory after collection.